The weather observed at BOSTON, MA (KBOS) at 03:54 PM EST was: The skies were mostly clear. Temperature: 23F ( -5C) Dewpoint: -11F (-24C) Relative Humidity: 21% Winds from the NW (330 degs) at 18 mph. Pressure: 1033.9 millibars. Altimeter:30.54 inches of mercury. The prevailing visibility was 10 miles.